Cooling

The sealant liquid heats up during operation, so a method of cooling the liquid is therefore often required. Our product range offers three different cooling solutions.

A: Partial recirculation

Cooling by partial recirculation is achieved by replacing part of the service liquid.
A temperature regulating valve ensures that the required amount of water is fed to the liquid separator. The excess hot water flows out of an overflow pipe.
The amount of water consumed depends on the selected water temperature and water supply temperature.
Typically, the amount of water added is between 10 and 20 % of the total water flow.

 

Pos 1: Liquid ring pump. 
Pos 2: Liquid separator. 
Pos 3: Service liquid valve. 
Pos 4: Service liquid supply. 
Pos 5: Temperature regulating valve.
Pos 6: Overflow pipe.

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 B: Heat exchanger

In instances where access to external cooling water is available, water consumption can be reduced to a few litres per hour. The operating liquid for the pump is fed through a heat exchanger where it is cooled before being fed back into the pump. A temperature regulating valve ensures the correct flow of cooling water for the required temperature.

 

Pos 1: Liquid ring pump. 
Pos 2: Liquid spearator 
Pos 3: Service liquid valve. 
Pos 4: Service liquid supply. 
Pos 5: Heat exchanger.
Pos 6: Temperature regulating valve.

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C: Air cooling

Cooling sealant liquid with the aid of an air cooler also minimises water consumption.
The operating temperature is generally slightly higher than that of the above solutions (typically around 20 øC above the ambient temperature).
As the air cooler is sensitive to impurities, the unit includes two cooling circuits.
The hot sealant liquid is fed through a heat exchanger, where it is cooled by the cold water from the air cooler. This means that any impurities drawn through the liquid ring vacuum pump will not be fed through the air cooler.

 

Pos 1 : Liquid ring pump
Pos 2 : Liquid separator
Pos 3 : Service liquid valve
Pos 4 : Service liquid supply
Pos 5 : Circulator
Pos 6 : Heat exchanger
Pos 7 : Air cooler

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